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    Recent research on composite beams with demountable shear connectors

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    Lam_et_al_Steel_Construction_Design_&_Research.pdf (877.1Kb)
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    Publication date
    2017-05
    Author
    Lam, Dennis
    Dai, Xianghe
    Ashour, Ashraf F.
    Rehman, Naveed
    Keyword
    Composite structures; Circular economy; Ductility characteristics; Demountable shear connectors; Metal profiled decking; Eurocode 4
    Rights
    © 2017 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin. This is the pre-peer reviewed version of the following article: Lam D, Dai X, Ashour A et al (2017) Recent research on composite beams with demountable shear connectors. Steel Construction: Design and Research. 10(2): 125-134., which has been published in final form at http://dx.doi.org/10.1002/stco.201710016
    Peer-Reviewed
    Yes
    
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    Abstract
    This paper presents experimental and numerical investigation on an innovative composite floor system with deconstructability. In this system, a composite slab formed with metal profiled decking is connected to a steel beam using demountable shear connectors. A series of push tests was conducted to investigate the behaviour of this form of shear connectors. In addition to the push tests, a full-scale composite beam was tested to failure in the laboratory under a number of cycles of monotonic loading. For direct comparison, a similar composite beam test was conducted using same section size, concrete strength, but using the conventional welded headed stud connectors. Test results showed that the behaviour of the composite beam with demountable shear connectors is comparable with the specimen with welded shear connectors. After the test was terminated, the demountable shear connectors were unfastened and the composite floor can be easily lifted off from the steel beam. Test result showed that these demountable shear connectors possess high ductility in comparison with the equivalent welded shear connectors. Simple design rules currently use in Eurocode 4 for the welded shear connections and Eurocode 3 for bolts are proposed to predict the shear resistance of this form of demountable shear connectors.
    URI
    http://hdl.handle.net/10454/12114
    Version
    Pre-peer reviewed version
    Citation
    Lam D, Dai X, Ashour A et al (2017) Recent research on composite beams with demountable shear connectors. Steel Construction: Design and Research. 10(2): 125-134.
    Link to publisher’s version
    http://dx.doi.org/10.1002/stco.201710016
    Type
    Technical paper
    Collections
    Engineering and Informatics Publications

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